Replacing Valve Unit (Levelling System)

Loosen fastening screws -arrows- and remove heat shield over the left exhaust system end hub.

Fig 1: Locating Fastening Screws On Heat Shield Mounting
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Detach the air lines -arrows- .
Disconnect connector -1- .

Fig 2: Locating Air Lines And Connector On Valve Unit Connections
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Loosen fastening screws -1- and remove valve unit -2- .

Fig 3: Identifying Fastening Screws And Valve Unit
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Installation is performed in reverse order.
Air line to valve unit: Tightening torque 4 Nm (3 ftlb.)

Valve unit to underbody: Tightening torque 4 Nm (3 ftlb.)